.upload-pic{
    width: 130px;
    height: 130px;
}
.info-uploadfile{
    position: absolute;
    top: 0;
    left: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
    opacity: 0;
}
.info-picupload{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #eee;
}
.pic-infochange{
    position: absolute;
    display: none;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.3);
    vertical-align: middle;
    line-height: 400px;
}

.ad-pic-info:hover .pic-infochange{
    display: block;
}